Can you block IP's ?
Most people's IPs change every time they logon to the Internet unless they have a static IP. AOL and many other large ISPs carries this to the extreme in that their users are given a different IP every time they access a different web page. This is why we do not offer IP blocking. Blocking one of AOL's IP could potentially block millions of users access to your guestbook.
We do block IPs of spambots and bots that attempt to skim email address from our guestbooks.